diff --git a/webs/sys/controller/user.go b/webs/sys/controller/user.go
index 5dd3c90..fca88f0 100644
--- a/webs/sys/controller/user.go
+++ b/webs/sys/controller/user.go
@@ -52,6 +52,10 @@ func (UserController) info(c *macaron.Context, ch cache.Cache, ctj gocloud.ContJ
 		}
 	}
 	e = userService.FindXid(xid)
+	if e == nil {
+		c.PlainText(404, []byte("not found"))
+		return
+	}
 	bts, err := json.Marshal(e)
 	if err == nil {
 		ch.Put(key, bts, 3600*5)